ELECTROCHEMICAL CELL WITH OPTICAL ABSORPTION AND REFLECTION CONTROLLED BY COPPER ELECTROPLATING

摘要

The invention concerns an electrochemical cell with controlled emission in the visible light and infrared by electroplating under the action of a control voltage. The cell comprises the following stacked flexible elements respectively in close contact: a first electrode (11) designed to be connected to a first potential of the control voltage; a first porous layer (12), formed by a mixture of PVDF-HFP, PEO and an activated carbon powder; a porous separator (13) formed by a mixture of PVDF-HFP and PEO; a second electrode (14) consisting of a gate and connected to a second potential of the control voltage; a second porous layer (15) formed by a mixture of PVDF-HFP, PEO and carbon powder, an aqueous electrolytic solution containing a copper salt being comprised in the first flexible layer (12), in the separator (13) and in the second flexible layer (15). The cell operates in aqueous medium. An aqueous medium allows a greater ion exchange as a result of the higher levels of ionic conductivity resulting from the high dissociation constant of water. Other advantages of water consist in its transparency to infrared rays and ecological character. The double advantage of the inventive cell lies in its very short time (about one minute).